Faced with Colorado River cuts, farmers look to groundwater for crops

The strategy of turning to groundwater pumping will test the limits of Arizona’s regulatory system for its desert aquifers, which targets some areas for pumping restrictions and leaves others with looser rules or no regulation at all. In Pinal County, which falls under these groundwater rules, the return to a total reliance on wells reflects a major turning point and raises the possibility that this part of Arizona could again sink into a pattern of falling groundwater levels — just as it did decades ago, before the arrival of Colorado River water.